题解 | 查询订单
查询订单
https://www.nowcoder.com/practice/5ae7f48dc94f4a76b0ade40b70caf308
select order_id,customer_name,order_date from customers join (select customer_id,order_id,order_date,dense_rank() over(partition by customer_id order by order_date desc ) as rk from orders) as r on customers.customer_id = r.customer_id where r.rk = 1
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